木薯柠檬酸废水的厌氧处理工程

PROJECT OF TREATING CASSAVA CITRIC ACID WASTEATER BY ANAEROBIC PROCESS

以木薯作为主要原料的江苏某柠檬酸厂 ,其废水处理系统将原有的发酵罐改造成UASB后 ,运行结果表明 :UASB进水水温在 38～ 4 2℃ ,出水CODCr保持在 10 0 0mg L以下 ,处理效率保持在 95 %左右 ,CODCr 有机负荷达到了9kg m3·d ,污泥实现颗粒化 ,在工程实践中取得的经验和数据 ,对设计或操作UASB反应器 ,有借鉴意义。

The system of wastewater treatment of a citric acid plant of Jiangsu,which uses cassava as its main raw material after reconstructing the ferment jar as UASB.The results show that when the temperature of the influent keeps 38～42 ℃ and the COD Cr is less than 1 000 mg/L ,the removal rate of COD Cr is up to 95%, and the organic loading (COD Cr ) is 9 kg/m 3·d.The granulation of anaerobic sludge is realized.Some experience and data were acquired in the practice,which may be a reference for design or operation of UASB reactor.